necking vs cuddling

necking and cuddling both are nouns.

Word	Noun	Adjective	Verb	Adverb
necking	Yes	No	No	No
cuddling	Yes	No	No	No

As nouns, necking and cuddling are synonyms defined as:

necking and cuddling: affectionate play (or foreplay without contact with the genital organs)

Other synonyms of necking include caressing, fondling, hugging, kissing, petting, smooching, snuggling.

necking (noun)	cuddling (noun)
affectionate play (or foreplay without contact with the genital organs)	affectionate play (or foreplay without contact with the genital organs)
the molding at the top of a column